The Connection of the Physical SciencesKey and Biddle, 1834 - 356 pages |
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Page 28
... rays which proceed from them . Were light propagated instantaneously , every object , whether at rest or in motion , would appear in the direction of these rays ; but as light takes some time to travel , we see Jupiter in conjunction ...
... rays which proceed from them . Were light propagated instantaneously , every object , whether at rest or in motion , would appear in the direction of these rays ; but as light takes some time to travel , we see Jupiter in conjunction ...
Page 29
... rays would strike against the side of the tube ; it would therefore , be necessary to incline the telescope a little , in order to see the star . The angle contained between the axis of the telescope and a line drawn to the true place ...
... rays would strike against the side of the tube ; it would therefore , be necessary to incline the telescope a little , in order to see the star . The angle contained between the axis of the telescope and a line drawn to the true place ...
Page 30
... rays of the celestial bodies can pass through the immense interval between them and us in an instant , or that they do not even require some considerable portion of time . ' As great discoveries generally lead to a variety of ...
... rays of the celestial bodies can pass through the immense interval between them and us in an instant , or that they do not even require some considerable portion of time . ' As great discoveries generally lead to a variety of ...
Page 38
... rays from the same point of the sun , round all sides of the earth , so that it would be more illuminated than in full moon , if the greater portion of the light were not absorbed by the atmosphere . Instances are recorded where this ...
... rays from the same point of the sun , round all sides of the earth , so that it would be more illuminated than in full moon , if the greater portion of the light were not absorbed by the atmosphere . Instances are recorded where this ...
Page 39
... rays to the earth . The whole disc of the new moon is frequently visible from atmospheric reflection . Planets sometimes eclipse one another . On the 17th of May , 1737 , Mercury was eclipsed by Venus near their inferior conjunction ...
... rays to the earth . The whole disc of the new moon is frequently visible from atmospheric reflection . Planets sometimes eclipse one another . On the 17th of May , 1737 , Mercury was eclipsed by Venus near their inferior conjunction ...
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according action angle appears arising atmosphere attraction axis becomes bodies cause centre changes colors comet consequently density depends determined diameter diminishes direction distance disturbing earth ecliptic effect electricity equal equator existence experiments extent extremely fluid force give given glass gravitation greater heat height increase influence intensity interesting kind known latitude length less light liquid magnetic mass matter mean measured meridian miles moon motion move nature nearly needle object observed occasions opposite orbit particles passing period phenomena plane plate polarized poles position probably produce proved quantity rays reflected refraction remain rest result revolve rings rotation round satellites seen side similar solar solid sound space square stars substances surface temperature terrestrial theory tion transmitted undulations variation varies vibrations volume waves whole wire
Popular passages
Page 20 - That day, as other solemn days, they spent In song and dance about the sacred hill; Mystical dance, which yonder starry sphere Of planets, and of fixed, in all her wheels Resembles nearest, mazes intricate, Eccentrick, intervolved, yet regular Then most, when most irregular they seem ; And in their motions harmony divine So smooths her charming tones, that God's own ear Listens delighted.
Page 316 - Bacon, that the words of prophecy are to be interpreted as the words of one 'with whom a thousand years are as one day, and one day as a thousand years.
Page 10 - Kepler also deduced from observation, that the squares of the periodic times of the planets, or the times of their revolutions round the sun, are proportional to the cubes of their mean distances from...
Page 28 - His true position is in the diagonal of the parallelogram, whose sides are in the ratio of the velocity of light to the velocity of the earth in its orbit, which is as 190000 to 19.
Page 298 - Jupiter ; it then gradually diminished in splendour, and, having exhibited all the variety of tints that indicate the changes of combustion, vanished sixteen months after its discovery, without altering its position. It is impossible to imagine anything more tremendous than a conflagration that could be visible at such a distance.
Page 296 - The distance of the fixed stars is too great to admit of their exhibiting a sensible disc ; but, in all probability, they are spherical, and must certainly be so if gravitation pervades all space, which it may be presumed to do, since Sir John Herschel has shown that it extends to the binary systems of stars.
Page 318 - These formulae, emblematic of Omniscience, condense into a few symbols the immutable laws of the universe. This mighty instrument of human power itself originates in the primitive constitution of the human mind, and rests upon a few fundamental axioms, which have eternally existed in Him who implanted them in the breast of man when He created him after His own image.